Requirements

Target platform: Windows, Android. 
(There is nothing explicitly platform specific so it might be possible to build for Mac,Linux and IOS. I also don't see a problem porting into WebGl.)

Plugins: Netcode (as agreed on consultation)

Editor extension: Card editor: Displays a list of all cards as defined in JSON provided by game designers. Once a card is selected its graphic is displayed. If it has a script the script will be displayed, else there will be a button to add script. If the button is pressed a file will be created in a relevant folder and it is prefilled with the card name and commented out functions cards use.
List of cards can be filtered by card that have scripts or don't have scripts.

C10 and A16: Netcode + Lobby and Relay - Game is multiplayer only and is played by two players. Uses unity cloud sevices. 
First a lobby is created and once both players join and the game is started by the host they are connected via relay.

A2: Addressables: I make use of addressables for certain prefabs and assets.